CONTENTS FEATURES I DFI Executive Director Theresa Rappaport [email protected] Executive Editor Helen Robinson [email protected] Managing Editor Emeritus Manuel A. Fine, [email protected] Advertising Manager Karol Paltsios, [email protected] DFI Executive Committee President, Robert B. Bittner Vice President, John R. Wolosick Secretary, Matthew Janes Treasurer, Dan Brown Past President, James A. Morrison Other Trustees Patrick Bermingham David Borger Gianfranco Di Cicco Khaldoun Fahoum Rudolph P. Frizzi Frank Haehnig Bernard H. Hertlein Gerry Houlahan James O. Johnson Douglas Keller Samuel J. Kosa K.S. Rama Krishna Marine Lasne J. Erik Loehr Raymond J. Poletto Michael H. Wysockey ® DEEP FOUNDATIONS The Magazine of the Deep Foundations Institute (DFI) is published bimonthly by DFI. 326 Lafayette Avenue, Hawthorne, NJ, 07506, USA T: 973.423.4030 | F: 973.423.4031 Email: [email protected] SPECIALLESSONS LEARNED :ISSUE 22 Pile Foundations for the San Francisco 49ers NFL Stadium Scott A. Walker, P.E., G.E., Gabriel J. Alcantar, Ramin Golesorkhi, Ph.D., P.E., G.E., and Brian Zuckerman, P.E. The new San Francisco 49ers Levi’s Stadium is part of the next generation of sporting facilities. Constructed in Santa Clara, Calif., the structure has 68,500 open-air bowl seats and more than 150 suites. Berkel & Company Contractors, Inc. was selected as the piling contractor and installed Auger Pressure Grouted Displacement (APGD) piles, which fulfilled the stringent noise and vibration criteria. Berkel installed over 3,000 piles in 30 working days — one day ahead of schedule. “Lessons Learned” related to strategic logistical planning and collaborative efforts which created an atmosphere for a successful and on-schedule project completion. 55 Member Profile: Professor Vernon Schaefer, Iowa State University: Hard Working Teacher and Effective Practical Researcher SPECIALLESSONS LEARNED :ISSUE 61 Lessons Learned from Practitioners Roderick A. Ellman Jr., P.E., Peggy Hagerty Duffy, P.E., and Martin Taube, P.E., P.G. Practitioners were asked to share insights they’ve gained over their careers. Rick Ellman of Mueser Rutledge Consulting Engineers writes about cofferdam designs for three separate hydroelectric projects on the Ohio River. Peggy Hagerty Duffy of Construction Solutions, LLC, Hagerty Engineering, Inc., and Technical Advisor to ADSC, recounts her experiences as a client representative and urges engineers to remain objective and rational. Marty Taube, Menard, Inc., discusses non-technical lessons learned including DFI’s precepts of “Collaboration, Networking, Education, Communication.” DEEP FOUNDATIONS • MAY/JUN 2014 • 13 O T N A S D I N N U S O T I F T P U E T E E D
